Ultraviolet and infrared absorptive greenish glass

Abstract

The present invention relates to an ultraviolet and infrared absorptive greenish glass (the first glass) containing in weight % expression at least coloring components of 0.3-0.5% of total Fe 2 O 3 , 0.8-2.0% CeO 2 , 0.8-2.0% TiO 2 , and 0.10-0.25% of FeO. This first glass may be an ultraviolet and infrared absorptive greenish glass (the second glass) in which CeO 2 amounts to 0.8-1.5% and TiO 2 amounts to 0.8-1.5%, and which contains at least 0.1-0.7% SnO as a coloring component. Each glass is characterized in each glass at 5 mm thickness is 9% or less in ultraviolet transmittance (T uv ) according to ISO/DIS9050, 1% or less in 350 nm wavelength transmittance (T 350 ), 70% or greater in 550 nm wavelength transmittance (T 550 ), and 25% or less in 1100 nm wavelength transmittance (T 1100 ).

1. In a soda-lime-silica series glass, an ultraviolet and infrared absorptive greenish glass, which is characterized in that, in an expression of weight %, it comprises at least coloring components of 0.3-0.5% of total Fe 2 O 3 , 0.8-2.0% CeO 2 , 0.8-2.0% TiO 2 , and 0.10-0.25% FeO, that CeO 2 /TiO 2  is 0.7-1.3 in weight ratio expression, and that the glass at 5 mm thickness is 9% or less in ultraviolet transmittance (T uv ) according to ISO/DIS9050, 1% or less in 350 nm wavelength transmittance (T 350 ), 70% or greater in 550 nm wavelength transmittance (T 550 ), and 25% or less in 1100 nm wavelength transmittance (T 1100 ). 
     
     
       2. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in that, in an expression of weight %, it comprises 67-75% SiO 2 , 0.5-3.0% Al 2 O 3 , 7.0-11.0% CaO, 2.0-4.2% MgO, 12-16% Na 2 O, 0.5-3.0% K 2 O, and 0.05-0.3% SO 3  in addition to the coloring components of the glass, that the sum of these components and the coloring components is 98% or greater, and that SiO 2 +Al 2 O 3 +TiO 2  amounts to 70-76%, CaO+MgO amounts to 10-15%, and Na 2 O+K 2 O amounts to 13-17%. 
     
     
       3. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in that FeO/Fe 2 O 3  is 0.3-0.6 in weight ratio expression. 
     
     
       4. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in that at 5 mm thickness visible light transmittance (T v ) by A light source is 67% or greater, solar radiation transmittance (T s ) is 48% or less, dominant wavelength (D) by D 65  light source is 510-560 nm, and excitation purity (Pe) is 10% or less. 
     
     
       5. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in comprising 5-50 ppm Cr 2 O 3 , 0-200 ppm MnO and 0-1.0% SnO as coloring components in weight % expression. 
     
     
       6. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in that CeO 2  amounts to 0.8-1.5% and TiO 2  amounts to 0.8-1.5%, and that it comprises at least 0.1-0.7% SnO as a coloring component in weight % expression. 
     
     
       7. An ultraviolet and infrared absorptive greenish glass according to  claim 6 , which is characterized in that it comprises in weight % expression 67-75% SiO 2 , 0.5-3.0% Al 2 O 3 , 7.0-11.0% CaO, 2.0-4.2% MgO, 12-16% Na 2 O, 0.5-3.0% K 2 O, and 0.05-0.3% SO 3  in addition to the coloring components of the glass, that the sum of these components and the coloring components is 98% or greater, and that SiO 2 +Al 2 O 3 +TiO 2  amounts to 70-76%, CaO+MgO amounts to 10-15%, and Na 2 O+K 2 O amounts to 13-17%. 
     
     
       8. An ultraviolet and infrared absorptive greenish glass according to  claim 6 , which is characterized in that FeO/Fe 2 O 3  is 0.3-0.6 in weight ratio expression. 
     
     
       9. An ultraviolet and infrared absorptive greenish glass according to  claim 6 , which is characterized in that at 5 mm thickness visible light transmittance (T v ) by A light source is 67% or greater, solar radiation transmittance (T s ) is 48% or less, dominant wavelength (D) by D 65  light source is 510-560 nm, and excitation purity (Pe) is 10% or less. 
     
     
       10. An ultraviolet and infrared absorptive greenish glass according to  claim 6 , which is characterized in comprising 5-30 ppm Cr 2 O 3  and 0-200 ppm MnO as coloring components in weight expression. 
     
     
       11. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in that dominant wavelength (D) by D 65  light source is 520-540 nm. 
     
     
       12. An ultraviolet and infrared absorptive greenish glass according to  claim 1 , which is characterized in that dominant wavelength (D) by D 65  light source is 525-550 nm. 
     
     
       13. An ultraviolet and infrared absorptive greenish glass according to  claim 6 , which is characterized in that dominant wavelength (D) by D 65  light source is 520-540 nm. 
     
     
       14. An ultraviolet and infrared absorptive greenish glass according to  claim 6 , which is characterized in that dominant wavelength (D) by D 65  light source is 525-550 nm.